Update postgres version to 15.

template/docker-compose.caddy.yml

@@ -46,7 +46,7 @@ services:
             - piped-proxy:/var/run/ytproxy
         container_name: caddy
     postgres:
-        image: postgres:13-alpine
+        image: postgres:15
         restart: unless-stopped
         volumes:
             - ./data/db:/var/lib/postgresql/data

template/docker-compose.nginx.yml

@@ -42,7 +42,7 @@ services:
             - piped-proxy
             - pipedfrontend
     postgres:
-        image: postgres:13-alpine
+        image: postgres:15
         restart: unless-stopped
         volumes:
             - ./data/db:/var/lib/postgresql/data